Yoshimura RS-12

Keating
Posts
155
Joined
7/4/2018
Location
Spring, TX, USA
Yoshi RS-12 works Amazing!!!

I have the new RS-12 in stainless and aluminum silencer. Same performance, just not quite as light, but more durable... Which I need as I rider the Vet expert classes against mostly 450s on my 250!!

Finally got to do some actual racing this past weekend and compare my RM-Z250 to the competition....  And by competition, I mean the plethora of 450s in the Vet classes.....!!  Well, the 1st moto was a tell tale! HOLESHOT!!!!   So, the dyno and the "seat of your pants" testing is fine, which I've done. The dyno results were okay and showed more power but race time tells all!
This RS-12 is incredible! The bike came out of the gate with authority in 2nd gear and pulled like a tractor half way to to the first turn! While the 450s were wasting time catching gears, I was still pulling. My other 3 motos were almost as good with a 2nd, 3rd, & 5th place start on 12-15 rider gates! I liked the Yoshimura RS-12 before, now I love it!!!! Stock engine, with a Rekluse, I haven't even had the head off yet, just the RS-12!!

Excellent Pipe!! Highly recommend!!

2
|
biondo
Posts
289
Joined
3/12/2020
Location
Escondido, CA, USA
6/13/2020 2:37pm
Keating wrote:
Yoshi RS-12 works Amazing!!! I have the new RS-12 in stainless and aluminum silencer. Same performance, just not quite as light, but more durable... Which I...
Yoshi RS-12 works Amazing!!!

I have the new RS-12 in stainless and aluminum silencer. Same performance, just not quite as light, but more durable... Which I need as I rider the Vet expert classes against mostly 450s on my 250!!

Finally got to do some actual racing this past weekend and compare my RM-Z250 to the competition....  And by competition, I mean the plethora of 450s in the Vet classes.....!!  Well, the 1st moto was a tell tale! HOLESHOT!!!!   So, the dyno and the "seat of your pants" testing is fine, which I've done. The dyno results were okay and showed more power but race time tells all!
This RS-12 is incredible! The bike came out of the gate with authority in 2nd gear and pulled like a tractor half way to to the first turn! While the 450s were wasting time catching gears, I was still pulling. My other 3 motos were almost as good with a 2nd, 3rd, & 5th place start on 12-15 rider gates! I liked the Yoshimura RS-12 before, now I love it!!!! Stock engine, with a Rekluse, I haven't even had the head off yet, just the RS-12!!

Excellent Pipe!! Highly recommend!!

Great Results 🏆💰 Michael!! My next purchase🤠 Good Luck on the Qualifers for
Loretta Lynn Race! Ciao Warren
1
10/3/2022 11:49pm
hey.. can you share the dyno results please? have you done any ECU mods as well? cheers
mattmargerum
Posts
23
Joined
2/19/2023
Location
South Amboy, NJ, USA
2/19/2023 1:56pm

I am doing pro circuit graphics on my KX but I really wanna run the Yosh pipe! Lol

5/21/2026 8:17am

I have 1 on my 2024 KX 450. Works amazing. The fit and finish on these pipes is amazing as well.

1

The Shop

sandman768
Posts
8111
Joined
3/21/2014
Location
Saratoga Springs, NY, USA
6/11/2026 4:05am

Wait…I thought you were a 125 guy?

1
Keating
Posts
155
Joined
7/4/2018
Location
Spring, TX, USA
6/11/2026 9:23am
sandman768 wrote:

Wait…I thought you were a 125 guy?

Oh, I am! I'll try a 4 stroke every so often and then head back to my 125s...! 

 

Post a reply to: Yoshimura RS-12

The Latest